In 1925, the Zell-Todtnau Railwayin the southern Black Forest, operated by the SEG (Süddeutsche Eisenbahn-Gesellschaft), needed a more powerful freight locomotive. They ordered their No. 104 from Hanomag that was based on the Bavarian Gts 2x3/3. So it also was a 0-6-6-0 Mallet tank locomotive, but in contrast to its Bavarian models had a saturated boiler and larger water supplies.

The locomotive was named “Zell” and mostly used to haul standard-gauge cars on transporter wagons. In 1953, the line became part of the Mittelbadische Eisenbahnen (MEG) and the locomotive was still numbered 104. In 1967, freight traffic was moved onto the road and the locomotive was sold to the Blonay-Chamby Museum Railway in Switzerland. Today, it is being refurbished.

A second locomotive of identical design was built for the Alb Valley Railway in 1928 and numbered 12s. As it was actually too heavy for this line, it was sold to the Brohl Valley Railway in 1934 and became their number II. There it was able to cut running costs as it managed to replace rack locomotives with adhesion service. It was retired and scrapped in 1957.